I believe it that the answer is C. Hope this helps
It would be Primary because the lake is it’s starting point and the pollution grew all the way to the factory.
Answer:
The reactants are the Products of Photosynthesis which is glucose and oxygen.

Explanation:
Answer:
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.